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Tests whether a set of symbols causes the expression to evaluate to true.
Namespace:  Microsoft.VisualStudio.Shell.Interop
Assemblies:   Microsoft.VisualStudio.Shell.Interop.11.0 (in Microsoft.VisualStudio.Shell.Interop.11.0.dll)
  Microsoft.VisualStudio.Shell.12.0 (in Microsoft.VisualStudio.Shell.12.0.dll)
Syntax
'Declaration
Function EvaluateExpression ( _
    wszExpression As String, _
    wszSymbols As String _
) As Boolean
bool EvaluateExpression(
    string wszExpression,
    string wszSymbols
)
bool EvaluateExpression(
    [InAttribute] String^ wszExpression, 
    [InAttribute] String^ wszSymbols
)
abstract EvaluateExpression : 
        wszExpression:string * 
        wszSymbols:string -> bool
function EvaluateExpression(
    wszExpression : String, 
    wszSymbols : String
) : boolean
Parameters
- wszExpression 
 Type: String- [in, unique] The expression to evaluate, for example, P1 & P2 & (!P3 | P4). Null and empty are allowed and results in a true return value. 
- wszSymbols 
 Type: String- [in, unique] Space-delimited list of symbols that evaluate to true, using the same format as VSHPROPID_ProjectCapabilities. Null and empty are allowed and results in an empty set of project capabilities during evaluation. 
Return Value
Type: Boolean
The result of the evaluation. true if the evaluation succeeded.
Remarks
Valid expression syntax is defined as:
- The capability expression, such as "(VisualC | CSharp) + (MSTest | NUnit)". 
- The "|" is the OR operator. 
- The "&" and "+" characters are both AND operators. 
- The "!" character is the NOT operator. 
- Parentheses force evaluation precedence order. 
- A null or empty expression is evaluated as a match. 
- Project capabilities may be any character except these reserved characters: "'`:;,+-*/\!~|&%$@^()={}[]<>? \t\b\n\r 
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.